I have a stockpile of NOS 2B2 sparkplugs left over from when my 87 was on the road. I used to run these gapped 42 and indexed. I see most are running ur5 or ap25/ap24 at this point. Its not a big expense but would I be able to use these on a bone stock low mileage 85 TType? If so what would be the recommended gap? Ive looked on line for heat range info for the 2b2 but have been unsuccessful. Thanks.